Aluminium alloy hmanga siam a ni

1. Aluminium alloy low-pressure casting technology hman dan tlangpui

1.1 Thuhmahruai leh thu bul

Aluminium alloy low-pressure casting hi a hmasawn ber a ni Casting Technology hmanga siam a ni gravity casting leh high-pressure casting inkar a ni. Liquid aluminum alloy chu pressure hnuaiah zawi zawiin a sang chho thei a, pressure hniam (a tlangpuiin 0.02-0.06MPa) hnuaiah mold cavity chu a luah khat thei a, chutah chuan pressure hnuaiah a solidify thei bawk. Principle chu pressure hniam hmanga molten metal chu pressure hnuaiah a sang chho zel tur a ni a, filling process chhunga turbulence leh air entrainment awm loh nan, chutiang chuan dense structure leh surface quality tha tak nei castings hmuh theih a ni. He technology hi automobile leh aerospace ang chi field-ah te hman a ni nasa hle a, casting quality mamawhna sang tak a awm bawk. Entirnan, automobile engine cylinder block leh cylinder head ang chi key component siamnaah hian low-pressure casting technology hian casting-te mechanical property leh dimensional accuracy nasa takin a tichangtlung thei a, scrap rates a tihhniam thei bawk.

2. Process flow leh key parameter hrang hrangte

2.1 Process flow tihchhiat dan

Aluminium alloy low-pressure casting process flow-ah hian a bik takin a hnuaia step te hi a tel a ni.

Inbuatsaihna stage: A hmasa berin mold chu preheated a ngai a. Preheating temperature hi 200-300°C inkar a ni tlangpui a, hei hian molten metal chu filling process chhungin mold temperature hniam vangin a lum rang lutuk lo ang a, hei hian filling effect a nghawng dawn a ni. Chutih rual chuan, a hmin tawh chu a thianghlimna tur atan bawlhhlawh leh gas te paih chhuak turin an tithianghlim a ni. Entirnan, refining agents leh degassing equipment hmangin molten metal-a hydrogen awm zat chu 0.1-0.2ml/100gAl hnuaiah tihhniam theih a ni a, hei hian casting-a porosity defects awmte chu nasa takin a tihziaawm thei a ni.

Filling stage: Preheated mold chu low-pressure casting machine-ah dah a ni a, chutah chuan molten metal chu pouring cup atang chuan riser-ah an theh lut a. Low pressure action hnuaiah chuan molten metal chu riser zawhin zawi zawiin a chho a, casting cavity chu a luah khat ta a ni. Filling speed hi a tlangpuiin 0.05-0.2m/s ah control a ni a, hei hian molten metal chu a sang thei ang bera a sang thei a, turbulence leh air entrainment a awm loh nan. Entirnan, automobile engine cylinder block siam hunah, filling speed dik taka control a nih chuan, casting surface quality chu Ra0.8 - 1.6μm a tling thei a, hei hian automotive industry-in quality mamawh a phuhruk thei a ni.

Solidification stage: Melten metal chuan cavity a luah khat hnuah pressure engemaw zat vawng reng la, pressure hnuaia casting chu solidify turin. Solidification hun chhung hi casting lian leh te a innghat a, a tlangpuiin minute tlemte atanga minute sawm aia rei thleng a ni. Solidification process chhung hian pressure vawn reng hian molten metal chu a shrinkage tihpun nan a pui a, shrinkage leh shrinkage defects a tihziaawm bawk. Entirnan, aerospace casting lian tak tak tan chuan solidification hun hi minute 30-40 vel a ni thei a, chu chuan casting chhungril structure chu a dense em tih enfiah nan a ni.

Mould hawn leh lakchhuah stage: Casting a solidified hnuah pressure pek kha titawp la, mold chu hawng la, casting chu la chhuak rawh. Hetih lai hian casting temperature chu a la sang hle a, cooling process-a casting chu a deformation emaw cracking emaw a awm loh nan cooling treatment dik tak, air cooling emaw water cooling emaw a ngai a ni. Entirnan, thin-walled casting thenkhat tan chuan air cooling hian cooling speed sang lutuk avanga crack awm chu a pumpelh thei a ni.

2.2 Key parameter control dan tur

Aluminium alloy low-pressure casting kalpui danah hian key parameters control hian casting quality-ah nghawng pawimawh tak a nei a:

Pressure control: Low-pressure casting pressure hi casting quality tichhe thei core parameter pakhat a ni. A tlangpuiin filling pressure leh holding pressure-ah then a ni. Filling pressure hi 0.02-0.06MPa ah control a ni tlangpui a, holding pressure hi casting size leh complexity a zirin siamrem a ni a, a tlangpuiin 0.05-0.1MPa inkar a ni. Entirnan, automobile engine cylinder head siam hunah filling pressure chu 0.04MPa atan thlan a ni a, holding pressure chu 0.08MPa atan thlan a ni a, hei hian filling integrity leh casting chhunga quality tha tak a tichiang thei a, casting density chu 98% aia tam a thlen thei bawk.

Temperature control: molten metal temperature leh mold temperature te pawh a tel. Melten metal temperature hi a tlangpuiin 650-750°C ah control a ni. Temperature sang lutuk hian molten metal chu oxidation leh air inhalation a thlen ang a, temperature hniam lutuk chuan filling effect a nghawng bawk ang. Mould temperature hi 200-300°C thlenga preheated a ni tlangpui a, a siam chhuah chhung hian a stable deuh reng a ni. Entirnan, thil siam chhuah hunah Aluminium Alloy hmanga siam a nis for aerospace, castings-te mechanical property chu nasa takin tihchangtlun theih a ni a, chu chu molten metal temperature leh mold temperature dik taka control a ni a, tensile strength 300-350MPa leh elongation 3%-5% a ni.

Filling speed control: Filling speed dik taka control hian filling process chhunga molten metal chu turbulence leh air entrainment a awm loh nan a pui thei a ni. A tlangpuiin 0.05-0.2m/s-a control a ni. Entirnan, automobile wheel siam hunah filling speed tihchangtlun a nih chuan casting surface quality chu Ra1.6-3.2μm a tling thei a, chutih rualin pore defect siam chhuah a tihtlem bakah casting quality pum pui a ti tha bawk.

Solidification time control: Solidification hun rei zawng hian casting chhungril quality leh dimensional accuracy a nghawng nghal vek a ni. Casting tenau tan chuan solidification hun hi a tlangpuiin minute tlemte a ni a; casting lian tak tak tan chuan solidification hun chhung hi minute sawm emaw a aia rei emaw pawh a ni thei. Entirnan, aerospace casting lian tak tak siam chhuah hunah solidification hun chhung minute 30-40 thlenga tihzauh a nih chuan shrinkage leh shrinkage defects te chu a tha thei ang bera tihtlem theih a ni a, casting chhungril structure chu a denser zawk a, dimensional accuracy chu ±0.5mm chhungah a siam thei bawk.

3. Thil hmanrua leh mold mamawh

3.1 Low-pressure casting hmanrua te mizia

Aluminium alloy low-pressure casting equipment hi low-pressure casting process tihhlawhtlinna atana hmanraw pawimawh tak a ni a, a design leh performance hian casting quality leh production efficiency a nghawng nghal vek a ni.

Pressure control system: He hmanruaah hian pressure control system precision sang tak a awm a, chu chuan filling pressure leh holding pressure dik takin a control thei a ni. Entirnan, tunlai low-pressure casting machine-a pressure control accuracy chu ±0.001MPa a tling thei a, hei hian turbulence leh air entrainment awm loh nan filling process chhungin molten metal chu a sang thei ang bera a sang thei a ni. He high-precision pressure control hi automobile engine cylinder block ang chi complex casting quality sang tak siamna atan a pawimawh hle.

Temperature control system: He hmanruaah hian temperature control system tha tak a awm a, chu chuan molten metal temperature leh mold temperature chu a rualin a control thei a ni. Melten metal temperature control dikna chu ±5°C chhungah a awm tlangpui a, mold temperature preheating leh holding dikna chu ±10°C chhungah a awm bawk. Entirnan, aerospace atana aluminum alloy casting siam a nih hian temperature control dik tak hian casting-te mechanical property nasa takin a tichangtlung thei a, tensile strength chu 300-350MPa a tling a, elongation chu 3%-5% a thleng thei bawk.

Automation: Tunlai low-pressure casting hmanrua hi automated sang tak a ni a, metal liquid injection, mold filling, solidification atanga mold hawn leh part lakchhuah thlengin automated operation zawng zawng a tihlawhtling thei a ni. Automation tihchangtlunna hian production efficiency a ti sang mai bakah mihring thilin casting quality a nghawng dan pawh a ti tlem bawk. Entirnan, automated equipment siam chhuah efficiency hi traditional manual operation aiin 30%-50% in a sang zawk a, casting scrap rate pawh 2%-3% ah tihhniam a ni.

Safety performance: Low-pressure casting hmanrua hi hnathawhna atana himna ngaihtuah kim vek a siam a ni. He hmanruaah hian himna tur chi hrang hrang, emergency stop device, safety protection door leh leakage detection system te dah a ni. Entirnan, hmanruaa himna venna kawngkhar chu a hnathawh laiin a khar nghal vek a, chu chuan metal liquid a tlak chhuah loh nan leh mi a hliam lo a, leakage detection system chuan hmanrua chhunga pressure leh temperature chu a hun takah a enfiah thei a, chu chuan a hnathawh dan a him leh him loh a enfiah thei bawk.

3.2 Mould design leh material thlan dan

Mold hi low-pressure casting process-a core component a ni a, a design leh material thlan dan hian casting quality leh production cost-ah nghawng pawimawh tak a nei a ni.

Mould design: Mould design hian casting pianzia, a lian leh te, leh a bang thickness te chu uluk taka ngaihtuah a ngai a ni. Entirnan, automobile engine cylinder head complex shape atan chuan mold design hian block structure a hmang a, chu chuan casting demolding leh mold enkawl awlsamna a siam a ni. Chutih rual chuan mould design-ah pawh molten metal flow path ngaihtuah a ngai a, gate leh exhaust system design tha zawka siamin pores leh slag inclusions-a chhiatna awmte tihziaawm a ngai bawk. Entirnan, optimized mould design hian casting surface quality chu Ra0.8 - 1.6μm a thlen thei a, hei hian automotive industry quality mamawh a phuhruk thei a ni.

Material thlan dan: Mold material hi a tlangpuiin chakna sang tak, temperature sang tak, leh wear-resistant alloy steel hmanga siam a ni. Entirnan, H13 steel hi mold material hman tlanglawn tak a ni a, thermal stability tha tak leh thermal fatigue resistance a nei a, thermal shock leh mechanical stress repeated pawh a tuar thei bawk. Aerospace casting lian tak tak siam a nih hian mold material service life chu vawi 10,000 - 15,000 vel a tling thei a, hei hian a siam chhuah senso chu a ti tlem thei hle.

Surface treatment: Mold chunglam hi a bik taka siam a ni tlangpui a, chu chu hard chrome plating, nitriding, etc. te hi a ni a, chu chuan mold a wear resistance leh corrosion resistance a ti tha zawk a ni. Entirnan, hard chrome plating hnua mould surface hardness chu HRC60-65 thlengin tihpun theih a ni a, service life pawh 20%-30% in a tizau thei bawk. Chutih rual chuan casting chunglama adhesion phenomenon chu a tlahniam a, casting chunglam quality pawh a tha zawk bawk.

Mold siam dikna: Mold siam dikna hian casting dimensional accuracy leh surface quality a nghawng nghal vek a ni. Tunlai mold siamnaah hian high-precision CNC machining equipment hman a ni a, mold dimensional accuracy chu ±0.05mm a tling thei a, surface roughness chu Ra0.4-0.8μm chhungah control theih a ni. Entirnan, automobile wheel siam hunah, high-precision mould siamna chuan casting reach dimensional accuracy chu ±0.1mm chhungah a siam thei a, surface quality chu Ra1.6-3.2μm thleng a siam thei a, hei hian market demand quality sang tak a phuhruk thei a ni.

4. A thatna leh hman dan tur

4.1 Process Advantages thlirletna

Traditional casting process nena khaikhin chuan aluminum alloy low-pressure casting technology hian process lama thatna nasa tak a nei a, hei hian tunlai thil siamnaah a lar hle.

Castings quality sang tak: Low-pressure casting technology hian filling process chhunga molten metal turbulence leh air entrainment chu a pumpelh thei a, pressure hniam zawka pressure hnuaiah awlsam taka filling leh solidifying hmangin, casting-a pores, shrinkage leh shrinkage ang chi chhiatna te a ti tlem a ni. Entirnan, low-pressure casting hmanga automobile engine cylinder block siam chhuah density chu 98% aia tam a tling thei a, mechanical property nasa takin a ti tha a, tensile strength chu 300-350MPa a tling a, elongation chu 3%-5% a tling a, scrap rate chu 2%-3%-ah a tlahniam bawk.

High dimensional accuracy: He process hian filling speed leh solidification time dik takin a control thei a, chu chuan casting dimensional accuracy a enfiah thei a ni. Entirnan, aerospace casting lian tak tak siam chhuah hunah, solidification hun chhung minute 30-40 thlenga tihzauh a nih chuan, casting dimensional accuracy chu ±0.5mm chhungah a thleng thei a, hei hian precision sang tak mamawh a phuhruk thei a ni.

High production efficiency: Tunlai low-pressure casting hmanrua hi automated sang tak a ni a, metal liquid injection, mold filling, solidification atanga mold hawn leh part lakchhuah thlengin automated operation zawng zawng a tihlawhtling thei a ni. Automated equipment siam chhuah efficiency hi traditional manual operation aiin 30% - 50% in a sang zawk a, chutih rualin mihring thilin casting quality a nghawng dan a ti tlem bawk.

High material utilization rate: Low-pressure casting process chhung hian molten metal chu zawi zawiin a sang chho a, pressure hnuaiah cavity chu a luah khat a, chu chuan molten metal splashing leh waste a ti tlem a ni. Entirnan, automobile wheel siam hunah chuan material utilization rate chu 15% - 20% in tihsan theih a ni a, hei hian production cost a ti tlem thei a ni.

Strong adaptability: Hetiang process hi aluminum alloy material hrang hrang leh complex shape hrang hrang, thin-walled casting atanga thick-walled casting lian tak tak thlengin casting siamna atan a tha hle. Entirnan, thin-walled automobile wheel leh aerospace casting lian tak tak tan chuan low-pressure casting hian an quality leh performance mamawh a phuhruk thei a ni.

4.2 Application field hrang hrang tihzauh

Aluminium alloy low-pressure casting technology hi a thatna danglam tak avang hian field tam takah hman a ni nasa hle a, hman dan tur kawng thar pawh tihzauh zel a ni bawk.

Automobile industry: Automobile engine cylinder block leh cylinder head ang chi key parts te hi low-pressure casting technology hmanna ber an ni. Entirnan, khawvel puma motor siamtu zinga 70% aia tam chuan engine cylinder block siam nan low-pressure casting technology an hmang a, an casting quality tihchangtlun hian direct-in engine performance leh rintlakna a tisang a ni. Hei bakah hian low-pressure casting hi automobile wheel siamnaah pawh hman a ni nasa hle a, hei hian wheel chakna leh lightweight level a ti sang mai bakah siamna senso a ti tlem bawk.

Aerospace field: Aerospace field hian casting quality leh performance atan thil mamawh sang tak tak a nei a, low-pressure casting technology hian a mamawh phuhrukna chu a phuhruk thei a ni. Entirnan, aerospace casting lian tak tak siam a nih hian low-pressure casting technology hian casting chhungril structure chu a ti compact zawk thei a, dimensional accuracy chu ±0.5mm chhungah a thleng thei a, mechanical property pawh nasa takin a tichangtlung thei bawk. Statistics atanga a lan dan chuan low-pressure casting hmanga siam chhuah aerospace casting hian he field-a casting zawng zawng zinga 40% aia tam a luah a, hei hi a la pung zel a ni.

Motorcycle industry: Low-pressure casting technology hi motorcycle engine cylinder block, cylinder head leh wheel leh part dang siamnaah pawh hman a ni nasa hle. Entirnan, motor siamtu lar tak pakhat chuan engine cylinder siam nan low-pressure casting technology a hmang a, a product scrap rate chu 2% - 3% ah tihhniam a ni a, production efficiency 30% - 50% in a tisang a, hei hian company market competitiveness nasa takin a tisang a ni.

Machinery siamna industry: Machinery siamna kawngah hian low-pressure casting technology hmangin aluminum alloy casting, complex shape hrang hrang leh performance sang tak mamawh, hydraulic valve body, pump body, etc. te siam a ni a, entirnan, machinery siamtu company chuan low-pressure casting technology hmangin hydraulic valve body an siam a, an castings density chu a reaches a ni 98% aia tam a nih chuan mechanical property nasa takin a tichangtlung a, service life pawh 20% - 30% in a ti rei bawk.

Application field thar chhuak: Technology hmasawnna kal zel avang hian aluminum alloy low-pressure casting technology hian energy thar leh 5G communication equipment te ang chi emerging fields-ah pawh hman theihna zau tak a lantir bawk. Entirnan, energy thar lirthei battery pack shell leh motor housing siamnaah hian low-pressure casting technology hian an mamawh rit leh performance sang tak a phuhruk thei a, energy thar lirthei te performance leh endurance zawng zawng a ti sang thei bawk.

5. Quality control leh defect venna

5.1 Quality endik dan tur

Aluminium alloy low-pressure casting quality endik hi casting-te hian standard a tlin leh tlin loh enfiahna kawng pawimawh tak a ni. A hnuaia hmanrua te hi hman ber a ni:

Non-destructive testing: ultrasonic testing, radiographic testing (X-ray leh CT scanning ang chi) leh magnetic particle testing te pawh a tel. Ultrasonic testing hian casting chhunga crack leh shrinkage holes ang chi chhiatna te chu millimeter level thlenga detection accuracy hmangin a hmu thei a; radiographic testing hian casting chhungril lam structure chu intuitive takin a lantir thei a, complex-shaped casting chhungril lama chhiatna hmuhchhuahna kawngah pawh nghawng lian tak a nei a magnetic particle testing hi a chunglam emaw, lei hnaih emawa crack awm ang chi chhiatna hmuhchhuah nan hman a ni ber. Entirnan, aerospace lamah chuan aluminum alloy casting lian tak tak CT scanning hmangin internal pores leh inclusions diameter 0.5mm aia tlem lo a hmuchhuak thei a, hei hian casting quality sang tak a tichiang thei a ni.

Dimensional inspection: Casting-te dimensional accuracy enfiah nan three-coordinate measuring instrument leh laser scanner ang chi hmanrua hmang rawh. Three-dimensional measuring machine tehna dikna chu ±0.01mm a tling thei a, hei hian casting pawn lam dimension leh chhung lam structural dimension dik takin a teh thei a laser scanner hian casting-a three-dimensional dimension data chu rang takin a hmu thei a, design model nen a khaikhin thei a, dimensional deviation chu a hmu thei bawk. Entirnan, automobile engine cylinder siamnaah hian three-dimensional measuring machine hmangin cylinder body-a key dimensions te, bore diameter leh hole spacing te chu a dikna chu ±0.05mm chhunga awm a nih theih nan assembly mamawh phuhruk nan hman a ni.

Mechanical property testing: Casting-a mechanical property te chu tensile test, hardness test leh hmanraw dang hmanga test a ni. Tensile test hian casting tensile strength, yield strength leh elongation te a hriat theih a; hardness test hmang hian casting chunglam leh a chhunga hardness distribution te chu an zirchiang thin. Entirnan, low-pressure casting hmanga siam aluminium alloy wheel tan chuan tensile test result-ah chuan a tensile strength chu 280-320MPa a thleng thei a, elongation chu 3%-5% a ni a, hardness test result-ah chuan a surface hardness chu HRC30-35 inkar a ni a, hei hian hman dan tur a phuhruk a ni.

Metallographic analysis: Casting microstructure chu metallographic microscope hmangin enfiah la, grain size leh phase composition ang chi characteristic te zirchiang rawh. Metallographic analysis hian casting solidification process-a harsatna awm thei, coarse grains leh segregation te a hmuchhuak thei a ni. Entirnan, aerospace atana aluminium alloy casting siam hunah metallographic analysis atanga a lan dan chuan grain size chu 50-100μm inkar control a ni a, structure chu a uniform a, segregation langsar tak a awm lo a, hei hian casting performance sang tak neih theihna turin a pui a ni.

5.2 Thil chhiatna tlanglawn leh invenna

Aluminium alloy low-pressure casting-ah hian chhiatna tam tak a awm thei. Heng chhiatna te hian casting te hmel lan dan quality a nghawng mai bakah an mechanical property leh service life pawh a ti tlem thei bawk. A hnuaia tarlan te hi chhiatna tlanglawn tak tak leh a venna dante chu a ni:

Porosity defect: Aluminium alloy low-pressure casting-a defect awm fo pakhat chu porosity a ni a, a chhan ber chu filling process-a molten metal-a gas a luh vang emaw, mold exhaust \ha lo vang emaw a ni. Invenna atana hmalakna hrang hrangte chu:

Filling speed chu optimize la, 0.05-0.2m/s ah control la, molten metal turbulence leh entrainment a awm loh nan.

Mould exhaust system chu a tibuai lo tih enfiah la, exhaust groove leh exhaust hole awmna leh a lian zawng chu a remchan dan angin design rawh.

Melten metal chu a pumin tithianghlim la, bawlhhlawh leh gas te chu paih chhuakin, hydrogen awm zat chu 0.1-0.2ml/100gAl hnuai lam control rawh.

Mould temperature chu 200-300°C ah dah la, filling process laiin molten metal cooling rate tihhniam la, gas precipitation hmanga pores siam loh tur.

Entirnan, automobile engine cylinder siamnaah chuan filling speed leh exhaust system design tihchangtlun a nih avangin pore defect rate chu 50% aia tam a tlahniam a, casting density pawh nasa takin a tha zawk a ni.

Shrinkage leh shrinkage defects: Heng defects te hi solidification laiin molten metal volume shrinkage avanga shrinkage compensation tling lo vang a ni. Invenna atana hmalakna hrang hrangte chu:

Solidification process chhunga shrinkage chu molten metal hian a compensate kim theih nan holding pressure leh solidification time chu a remchan dan angin control rawh. Entirnan, aerospace casting lian tak tak tan chuan holding pressure chu 0.08-0.1MPa atan thlan a ni a, solidification time chu minute 30-40 thleng tihzauh a ni a, hei hian shrinkage leh shrinkage defects te chu a ti tlem thei hle.

Castings structural design chu a thick leh large parts-a concentrated shrinkage awm loh nan optimize la, molten metal chu sequential solidification a awm theih nan pouring system leh riser design mumal tak hmang bawk ang che.

Melten metal temperature leh mold temperature kha khauh taka control la, temperature sang lutuk avanga molten metal oxidation leh air inhalation awm loh nan, chu chuan shrinkage compensation effect a nghawng dawn a ni.

Entirnan, automobile wheel siamnaah chuan holding pressure leh solidification time optimizing hmangin shrinkage cavity leh shrinkage defect rate chu 40% in a tlahniam a, casting chhungril structure pawh a compact zawk a ni.

Slag inclusion defect: Slag inclusion hi filling process chhunga molten metal chhunga bawlhhlawh emaw oxide scale emaw casting chhunga roll a nih chuan a lo awm thin. Invenna atana hmalakna hrang hrangte chu:

Melten metal chu fully refine la, bawlhhlawh paih chhuakin oxide scale hmangin molten metal chu a thianghlim theih nan.

Filling process chhunga molten metal chu turbulence leh slag rolling awm lo turin pouring system design chu optimize rawh.

Melten metal chu a sang thei ang bera a sang theih nan leh slag inclusion awm theihna tur a tlem theih nan pouring speed leh filling speed chu a remchan dan anga control tur a ni.

Filter screen ang chi filtering device hmangin molten metal chu filter la, bawlhhlawh lian tak tak leh oxide scale te chu paih chhuak rawh.

Entirnan, aluminum alloy wheel siamnaah chuan filter hman leh pouring system design tihchangtlun hmangin slag inclusion defect rate chu 30%-in tihhniam a ni a, casting-te surface quality leh internal quality pawh nasa takin a tichangtlung a ni.

Surface defects: surface roughness, cold shut, flow marks, etc. Heng defects te hian castings te appearance quality leh dimensional accuracy a nghawng ber a ni. Invenna atana hmalakna hrang hrangte chu:

Filling speed leh mold temperature optimize la, filling process chhungin molten metal chu a sang thei ang bera a sang thei ang a, cold shut leh flow marks a awm loh nan.

Mold chunglam chu fai leh lubrication condition tha takah dah la, molten metal chu mold chunglamah adhesion tihtlem la, casting surface quality pawh ti tha rawh.

Casting chunglam quality-a bawlhhlawh leh gas-in nghawng a neih loh nan molten metal thianghlimna kha khauh takin control rawh.

Mold siamna hmanrua precision sang tak hmang la, a dimensional accuracy leh surface roughness chu a mamawh ang zela a tlin theih nan hmang ang che.

Entirnan, automobile engine cylinder head siamnaah chuan filling speed leh mold temperature tihchangtlun a nih chuan surface roughness chu Ra0.8 - 1.6μm-ah control theih a ni a, cold shut leh flow mark defect rate chu 60% in a tlahniam a, casting appearance quality pawh nasa takin a tha zawk a ni.

6. Hmasawnna kalphung leh Technological Innovation

6.1 Technology lama hmasawnna kalphung

Aluminum alloy low-pressure casting technology chu kawng hrang hrangah a lo thang chho zel a, hei hian market mamawhna sang zel leh quality sang zawk mamawh a phuhruk thei a ni.

Intelligence leh automation a tha chho zel: Industry 4.0 hmasawnna avang hian low-pressure casting equipment te intelligence leh automation level pawh a tha chho zel dawn a ni. Entirnan, sensor technology hmasawn tak leh automated control system te hman a nih chuan real-time monitoring leh casting process dik taka control theih a ni a, chutah chuan key parameters pressure, temperature, leh filling speed te automatic adjustment te pawh a tel a ni. Hei hian production efficiency a ti sang mai bakah scrap rate a tihhniam belh thei a, casting quality stability a ti sang thei bawk.

Green casting leh energy save leh consumption tihtlem: Khawvel pum huapa environment awareness tihpunna hnuaiah hian low-pressure casting technology hian green development hi a ngaihven zawk dawn a ni. Khawthlang lamah chuan process parameter leh equipment design tihchangtlun a nih chuan energy hman leh exhaust emission tihtlem theih a ni a; a lehlamah chuan boruak bawlhhlawh tihtlem nan boruak tichhe lo mold material leh coating te hman a ni. Entirnan, energy hmang tlem thei low-pressure casting machine thar thenkhat chuan heating system leh insulation measures siam that hmangin energy hmanral chu 20% - 30% in an tihtlem thei a ni.

High-performance aluminum alloy materials hman dan: Aerospace leh new energy vehicle ang chi high-end field-a casting performance atana mamawh sang zawk phuhruk theih nan high-performance aluminum alloy materials zirchianna leh siam chhuah leh hman dan chu nakin lawka hmasawnna tur ngaihtuah ber a ni ang. Entirnan, alloying element bik dah belh leh heat treatment process tihchangtlun hmangin, low-pressure casting technology hmanna tur zau zawka siam turin aluminium alloy material chakna, toughness leh corrosion resistance sang zawk nei siam chhuah a ni.

Complex structure casting siam: Product design a buaithlak zual zel avangin low-pressure casting technology hmanga complex structure casting siam theihnaah hian mamawh sang zawk a awm a ni. Mould design leh filling technology tihchangtlun a, computer simulation technology hmasawn tak hmanga casting process tihchangtlun a nih chuan, a pianzia complex zawk nei casting quality sang tak siam chhuah theih a ni. Entirnan, computer simulation technology hmanga filling path leh solidification process tihchangtlun nan complex structure casting-a chhiatna awmte chu \ha takin a tihziaawm thei a, an performance leh rintlakna pawh a ti \ha thei a ni.

6.2 Innovative Technologies hman dan tur

Low-Pressure Casting-a Intelligent Control System hman dan: Automotive parts siamtu company pakhat chuan an aluminium alloy low-pressure casting production line atan intelligent control system hmasawn tak an rawn siam chhuak a. He system hian mold leh equipment-ah high-precision sensor tam tak dahin casting process-a pressure, temperature, leh filling speed te ang chi data te chu real time-in a khawlkhawm a, advanced algorithms hmangin a zirchiang a, process parameters chu automatic-in a siamrem thei a ni. Entirnan, automobile engine cylinder block siamnaah hian intelligent control system hian real-time data hmangin filling speed leh holding pressure chu automatic-in a ti tha thei a, casting-te scrap rate chu 30%-in a tihhniam thei a, production efficiency 20%-in a tisang thei a, casting-te mechanical property pawh nasa takin a tichangtlung thei a, tensile strength chu 10% - 15%-in a tisang thei bawk.

Green casting technology hman dan: Aerospace parts siamtu chuan green casting technology zirchianna leh siam chhuah leh hman dan tur a ngaihtuah nasa hle. Environment friendly mold coating chi thar an hmang a, demolding performance tha tak leh temperature resistance sang tak nei a ni a, chutih rualin hman laiin traditional coatings atanga gas hlauhawm lo chhuak chu a tihtlem bawk. Hei bakah hian company hian low-pressure casting equipment-te energy-saving transformation a kalpui bawk a, heating system tihchangtlun leh insulation materials tha tak hmanga hmanrua hman zat chu 25%-in a tihtlem bawk. Aerospace casting lian tak tak siam a nih hian green casting technology hman hian siam man a tihhniam mai bakah casting quality leh surface finish a ti sang a, aerospace field-a thil phut khauh tak takte chu a phuhruk a ni.

High-performance aluminium alloy material siam leh hman dan: Energy nei lirthei siamtu thar chuan material research and development institution nen thawkdunin, energy thar lirthei atana battery pack shell leh motor shell siamna atana bik high-performance aluminum alloy material chi thar siam a ni. He aluminium alloy material hian rare earth elements te dah belhin heat treatment process a ti tha zawk avangin chakna sang zawk leh corrosion resistance tha zawk a nei a ni. Battery pack shell siam nan low-pressure casting technology hman a nih chuan aluminum alloy material thar hian casting tensile strength chu 380-420MPa a thlen tir a, elongation chu 20%-30% in a tisang a, casting weight pawh 10%-15% in a tihhniam bawk a, hei hian energy thar lirthei te endurance leh safety a ti tha hle bawk.

7. Industry standard leh specification hrang hrangte

7.1 Ram chhung leh ram pawn standard tehkhin

Aluminium alloy low-pressure casting technology hian ram chhung leh ram pawnah standard hrang hrang a nei a, hei hian a production process leh product quality a tidanglam thei a ni. International standards ISO 945-1991 "Terms of Cast Iron Metallography" ang chi, cast iron tan ber ni mahse, metallographic structure sawifiahna method hian aluminum alloy low-pressure casting metallographic analysis atan pawh reference a pe bawk. Hei bakah hian International Organization for Standardization (ISO) chuan ISO 8518 "Casting - Aluminium leh aluminum alloy sand castings leh gravity castings - Terms, definitions leh classification" tih ang chi standard a tichhuak bawk a, hei hian aluminum alloy castings classification leh basic requirements a tichiang a, low-pressure casting aluminum classification atan pawh a bulpui a pe bawk alloy hmanga siam chhuah a ni.

China ramah pawh China hian a kaihhnawih tehfung hrang hrang a siam bawk. Entirnan, GB/T 11351-2009 "Casting aluminum alloys", chu chuan cast aluminum alloy-te grade, chemical composition, mechanical property leh mamawh dangte a tarlang a, raw material thlan dan tur leh aluminum alloy low-pressure casting quality control dan tur kaihhruaina chipchiar tak a pe bawk. GB/T 13288.1-2009 "Casting surface-te roughness tehna hmanrua Part 1: Visual comparison method" hian aluminum alloy low-pressure casting-te surface quality tehna atana hmanraw bik a pe a. International standard, domestic standard nena khaikhin chuan Ram chhunga thil siam chhuah dan leh market mamawh inzawmkhawmna lam a ngaihtuah zawk a, technical indicator leh testing method bik thenkhat chu a tithianghlim a, a tipung bawk. Entirnan, chemical composition control chungchangah chuan, domestic standard-ah chuan domestic industry hrang hranga aluminum alloy casting-te performance mamawh phuhruk zawk nan domestic aluminum alloy siam leh hman dan azirin alloying element thenkhat content range chu a remchan dan angin a siamrem a ni.

7.2 Industry specification kalpui dan tur

China ramah chuan aluminum alloy low-pressure casting industry-a specification kalpui dan tlangpui chu a tha hle. Khawthlang lamah chuan market-a inelna a lo chak chhoh zel avangin enterprise-te chuan product quality leh market-a inelna tihchangtlun nan industry standard kalpui dan hi an ngaihven zual sauh sauh a ni. Entirnan, automobile OEM-te’n parts quality chungchanga an mamawh khauh tak tihhlawhtlin nan, automobile parts siamtu tam tak chuan GB/T 11351-2009 leh aluminum alloy low-pressure casting siamna atana standard dangte khauh takin an zawm a, raw material lei, production process control atanga finished product inspection thlengin quality management system kimchang tak an din a ni. A lehlamah chuan sorkar department kaihhnawih te pawhin aluminum alloy low-pressure casting industry enkawlna an tichak a, quality supervision spot check, production license management leh kawng dang hmanga industry specification khauh taka kalpui turin enterprise te an chawisang bawk. Entirnan, tun hnaiah local quality supervision department-te chuan aluminum alloy casting siamtute chu spot check tam tak an nei a, standard zawm lote chu an siam ṭha a, an hrem a, industry norms kalpui dan tur pawh ṭha takin an tipung a ni.

Mahse, harsatna engemaw zat a awm bawk. Small leh medium-sized enterprise thenkhatah chuan technical level leh capital investment tlem avangin industry standard kalpui dan hi a khauh tawk lo hle. Entirnan, motorcycle parts tenau siamtu thenkhatah chuan casting surface roughness dik lo hmuhchhuah leh chemical composition control tawk lo ang chi harsatna a awm thei. Chu bakah, aluminum alloy low-pressure casting technology hmasawnna chhunzawm zel leh application field tihpun zel avangin harsatna leh harsatna thar thenkhat chuan industry norms awmsa kalpui dan tur mamawh sang zawk a siam bawk. Entirnan, energy thar lirthei siamna kawngah chuan aluminum alloy low-pressure casting-a rit lo leh performance sang tak mamawhna chu a sang chho zel a, enterprise-te thil siam chhuah dan tur kaihhruaina tha zawk neih theih nan standard leh specification inzawmte tihchangtlun belh a ngai a ni.